Bernhard Holzer
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View article: An electron-hadron collider at the high-luminosity LHC
An electron-hadron collider at the high-luminosity LHC Open
We discuss a concept of a lower-energy version of the Large Hadron-electron Collider (LHeC), delivering electron-hadron collisions concurrently to the hadron-hadron collisions at the high-luminosity LHC at CERN. Assuming the use of a 20 Ge…
View article: The Large Hadron electron Collider as a bridge project for CERN
The Large Hadron electron Collider as a bridge project for CERN Open
The LHeC is the project for delivering electron-nucleon collisions at CERN using the HL-LHC beams. An Energy Recovery Linac in racetrack configuration will provide 50 GeV electrons to achieve centre-of-mass energies around 1 TeV/nucleon an…
View article: Proton Beam Dynamics for Concurrent Operation of the LHeC and HL-LHC
Proton Beam Dynamics for Concurrent Operation of the LHeC and HL-LHC Open
The Large Hadron electron Collider (LHeC) project is studying a new LHC interaction region for deep inelastic scattering collisions between electrons and hadrons in the TeV energy scale. An intense 50 GeV lepton beam is brought into collis…
View article: Overview of the LHeC and FCC-he accelerator concepts
Overview of the LHeC and FCC-he accelerator concepts Open
The Large Hadron–Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy- recovery technology, it collides a novel, intense elect…
View article: The Development of Energy-Recovery Linacs
The Development of Energy-Recovery Linacs Open
Energy-recovery linacs (ERLs) have been emphasised by the recent (2020) update of the European Strategy for Particle Physics as one of the most promising technologies for the accelerator base of future high-energy physics. The current pape…
View article: Energy Frontier DIS at CERN: the LHeC and the FCC-eh
Energy Frontier DIS at CERN: the LHeC and the FCC-eh Open
The Large Hadron-electron Collider (LHeC) at CERN is a design study in the context of the LHC luminosity upgrade project, HL-LHC, to establish electron-proton/nucleus collisions with centre-of-mass energies in the TeV regime and luminositi…
View article: Front-to-End Simulations of the Energy Recovery Linac for the LHeC Project
Front-to-End Simulations of the Energy Recovery Linac for the LHeC Project Open
The LHeC project aims to study the electron-proton deep inelastic scattering at the TeV energy scale with an innovative accelerator program. It exploits the promising energy recovery technology in order to collide an intense 50 GeV lepton …
View article: Update on the Low Emittance Tuning of the e⁺/e⁻ Future Circular Collider
Update on the Low Emittance Tuning of the e⁺/e⁻ Future Circular Collider Open
The FCC-ee project studies the design of a future 100 km e+/e circular collider for precision studies and rare decay observations in the range of 90 to 350 GeV center of mass energy with luminosities in the order of 10³⁵ cm⁻² s⁻¹. To achie…
View article: Studies of the Energy Recovery Performance of the PERLE Project
Studies of the Energy Recovery Performance of the PERLE Project Open
The Powerful Energy Recovery Linac for Experiments (PERLE) is an accelerator facility for the development and application of the energy recovery technique for an intense 500 MeV electron beam. The paper presents the studies that have been …
View article: Accelerator Challenges of the LHeC Project
Accelerator Challenges of the LHeC Project Open
The LHeC project studies the design of a future electron-proton collider at CERN that will run in parallel to the standard LHC operation. For this purpose, the existing LHC storage ring will be combined with an Energy Recovery Linac (ERL),…
View article: Emittance Tuning for the Future Circular e+/eCollider (FCC-ee)
Emittance Tuning for the Future Circular e+/eCollider (FCC-ee) Open
The Future Circular e+/e- Collider (FCC-ee) presents an appreciable challenge for emittance tuning due to the strong final focusing and chromaticity correction, required to achieve high luminosities in the order of 10$^{36}$cm$^{-2}$s$^{-1…
View article: Low Emittance Tuning of FCC-ee
Low Emittance Tuning of FCC-ee Open
The FCC-ee project studies the design of a future 100 km e+/e circular collider for precision studies and rare decay observations in the range of 90 to 350 GeV center of mass energy with luminosities in the order of 10 35 cm –2 s –1 . In o…
View article: Overall Injection Strategy for FCC-ee
Overall Injection Strategy for FCC-ee Open
The Future Circular electron-positron Collider (FCC-ee) requires fast cycling injectors with very low extraction emittances to provide and maintain extreme luminosities at center of mass energy varying between 91.2-385 GeV in the collider.…
View article: Low-emittance Tuning for Circular Colliders
Low-emittance Tuning for Circular Colliders Open
The 100 km FCC-ee e⁺/e⁻ circular collider requires luminosities in the order of 10³⁵ cm⁻² s⁻¹ and very low emittances of 0.27 nm·prad for the horizontal plane and 1 pm·prad in the vertical. In order to reach these requirements, extreme foc…
View article: Status of the Horizon 2020 EuPRAXIA Conceptual Design Study
Status of the Horizon 2020 EuPRAXIA Conceptual Design Study Open
The Horizon 2020 Project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for a highly compact and cost-effective European facility with multi-GeV electron beams accele…
View article: Optic Corrections for FCC-hh
Optic Corrections for FCC-hh Open
The FCC-hh (Future Hadron-Hadron Circular Collider) is one of the options considered for the next generation accelerator in high-energy physics as recommended by the European Strategy Group. The evaluation of the various magnets mechanical…
View article: Beam Dynamics in Synchrotrons
Beam Dynamics in Synchrotrons Open
The paper gives an overview of the particle dynamics in synchrotrons and storage rings. Both, transverse as well as the longitudinal plane are described in linear approximation. The main emphasis is to give an introduction into the basic c…
View article: PERLE - Lattice Design and Beam Dynamics Studies
PERLE - Lattice Design and Beam Dynamics Studies Open
PERLE (Powerful ERL for Experiments) is a novel ERL test facility, initially proposed to validate choices for a 60 GeV ERL foreseen in the design of the LHeC and the FCC-eh. Its main thrust is to probe high current, CW, multi-pass operatio…
View article: Status of the FCC-ee Top-Up Booster Synchrotron
Status of the FCC-ee Top-Up Booster Synchrotron Open
This contribution presents the status of the top-up booster synchrotron for the FCC electron-positron collider FCC-ee, which is a 100 km electron-positron collider being designed for precision studies and rare decay observations in the ran…
View article: FCC-ee Dynamic Aperture Studies and Frequency Map Analysis
FCC-ee Dynamic Aperture Studies and Frequency Map Analysis Open
The FCC-ee Lepton Collider will provide e⁺e⁻ collisions in the beam energy range of 45.6 GeV to 182.5 GeV. FCC-ee will be a precision measurement tool for Z, W, H and t physics with expected luminosities of 2.07× 10³⁶ cm⁻² s⁻¹ at the Z-pol…
View article: Overview of Arc Optics of FCC-hh
Overview of Arc Optics of FCC-hh Open
The FCC-hh (Future Hadron-Hadron Circular Collider) is one of the options considered for the next generation accelerator in high-energy physics as recommended by the European Strategy Group. In this overview the status and the evolution of…
View article: Updates on the Optic Corrections of FCC-hh
Updates on the Optic Corrections of FCC-hh Open
The FCC-hh (Future Hadron-Hadron Circular Collider) is one of the options considered for the next generation accelerator in high-energy physics as recommended by the European Strategy Group, and the natural evolution of existing LHC. The e…
View article: Dipole Field Quality and Dynamic Aperture for FCC-hh
Dipole Field Quality and Dynamic Aperture for FCC-hh Open
The Nb₃Sn dipole design for the hadron machine option of the Future Circular Colliders enters in an intense and long R&D phase. As a result, more realistic dipole field quality evaluations are available for beam dynamics studies. The paper…
View article: Transverse Beam Dynamics
Transverse Beam Dynamics Open
This paper gives an overview of the transverse dynamics in particle acceler- ators with – following the emphasis of the school – special focus (hic) on transfer lines and application for beam injection and extraction. We will re- strict ou…
View article: CAS - CERN Accelerator School: Plasma Wake Acceleration
CAS - CERN Accelerator School: Plasma Wake Acceleration Open
These proceedings are of interest to staff and students in accelerator laboratories, university departments and companies working in or having an interest in the field of new acceleration techniques. Following introductory lectures on plas…
View article: Chapter 2: Machine Layout and Performance
Chapter 2: Machine Layout and Performance Open
Chapter 2 in High-Luminosity Large Hadron Collider (HL-LHC) : Preliminary Design Report. The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Since opening up a new energy frontier for exploration in 201…
View article: Machine Layout and Performance
Machine Layout and Performance Open
Chapter 2 in High-Luminosity Large Hadron Collider (HL-LHC) : Preliminary Design Report. The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Since opening up a new energy frontier for exploration in 201…
View article: Beam Optics for FCC-ee Collider Ring
Beam Optics for FCC-ee Collider Ring Open
A beam optics scheme has been designed [ 1 ] for the Future Circular Collider- e + e − (FCC-ee). The main characteristics of the design are: beam energy 45 to 175 GeV, 100 km circumference with two interaction points (IPs) per ring, horizo…
View article: Advance on Dynamic Aperture at Injection for FCC-hh
Advance on Dynamic Aperture at Injection for FCC-hh Open
In the hadron machine option, proposed in the context of the Future Circular Colliders (FCC) study, the first evaluation of dipole field quality, based on the Nb3Sn technology, has shown a Dynamic Aperture at injection above the LHC target…
View article: Coupling and Dispersion Correction for the Tolerance Study in FCC-ee
Coupling and Dispersion Correction for the Tolerance Study in FCC-ee Open
The FCC-ee study is investigating the design of a 100 km e⁺/e⁻ circular collider for precision measurements and rare decay observations in the range of 90 to 350 GeV center of mass energy with luminosities in the order of 10³⁵ cm⁻²s⁻¹. In …